Numerical Modeling and Field Study for the Jacksonville Harbor Deepening Project: A Comprehensive Approach
Publication: Ports 2010: Building on the Past, Respecting the Future
Abstract
Jacksonville Harbor, already a major U.S. Port, is presently undergoing a general reevaluation study to determine design plans to deepen the Harbor and expand Port activities while minimizing impacts to environmental resources. Included in development plans is the deepening of the Federal Channel over the lower 20 miles of the St Johns River, widening along the Trout River Cut Range, Short Cut Turn and Training Wall Reach areas and the installation of a training wall along the Mile Point Reach. This paper will provide an analysis of the data obtained during field studies, preliminary results from subsequent modeling efforts and a description of the approach for future modeling work. Field measurements were obtained using underway shipboard and mounted instrument platforms that collected data associated with tidal flows, discharge from the St. Johns River, Intracoastal Waterway and major tributaries, water surface elevations, along-channel and cross-channel gradients in velocity, salinity, depth, temperature and suspended sediment concentration. These data were used as input parameters for a comprehensive modeling task that included Resource Management Associates (RMA), a two-dimensional hydrodynamic model of the Federal Channel, the Adaptive Hydraulics Model (ADH), a two-dimensional hydrodynamic and sediment transport model of the St. Johns River Estuary system and ADvanced CIRCulation Model (ADCIRC), a coastal circulation and storm surge model. Development of Environmental Fluid Dynamics Computer Code (EFDC) model is underway to assess the effect of the Harbor deepening project on salt intrusion. Coastal processes were investigated using the Coastal Modeling System (CMS) in the vicinity of the St Johns River entrance, in order to evaluate shoaling due to littoral transport and to assess the potential impacts on the adjacent beaches due to channel deepening. The field data analysis and modeling results are being used to design a deepened Federal Channel that will accommodate future vessel classes while minimizing impacts to the environment.
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© 2010 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Analysis (by type)
- Construction engineering
- Construction management
- Engineering fundamentals
- Field tests
- Hydraulic engineering
- Hydraulic models
- Hydraulic structures
- Hydrologic models
- Models (by type)
- Numerical analysis
- Numerical models
- Ports and harbors
- Project management
- Tests (by type)
- Two-dimensional models
- Water and water resources
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